Types of Blood Fineliner Pens - 6 Pack

Did you know that not all blood is red? While most vertebrates (like humans) have red blood, octopuses and crustaceans have blue blood, leeches and some segmented worms have light green, lizards have green, some marine worms have violet, and sea cucumbers and some beetles have yellow! Write in the rainbow of blood colors with this fineliner 6-pack.

Each pack contains 6 unique colors:
Hemoglobin 
Hemocyanin 
Chlorocruorin 
Hemerythrin 
Vanabin 
Biliverdin

Details:
6 Pack of Fineliners
Water-Based Ink
.4 mm Felt-Tips
100% Recycled Ocean-Bound Plastic
Compostable Packaging

By Cognitive Surplus